Association between physical exercise and stroke recurrence among first-ever ischemic stroke survivors

Area of Science:

• Neurology
• Preventive Medicine
• Exercise Science

Background:

• The link between physical activity and stroke recurrence remains debated.
• Understanding exercise's role is crucial for secondary stroke prevention strategies.

Purpose of the Study:

• To investigate the association between exercise patterns and the risk of recurrent ischemic stroke.
• To identify optimal exercise parameters for reducing stroke relapse in survivors.

Main Methods:

• Prospective cohort study involving 760 first-ever ischemic stroke survivors.
• Data collected via interviews from January 2010 to June 2016.
• Discrete-time survival analysis used to model stroke recurrence risk based on exercise type, frequency, intensity, and duration.

Main Results:

• Exercising 3.5–7 hours/week or >7 hours/week was associated with significantly lower stroke recurrence risk (OR 0.415 and 0.356, respectively).
• High variability in exercise duration (>4 hours difference) increased recurrence risk (OR 2.153).
• Consistent, regular, mild exercise (≥5 sessions/week, ~40 min/session) correlated with reduced recurrence rates.

Conclusions:

• Engaging in regular, consistent exercise is associated with a lower risk of recurrent ischemic stroke.
• Irregular exercise patterns and significant fluctuations in exercise duration may increase stroke recurrence risk.
• Recommendations for physical activity should emphasize consistency and appropriate duration for stroke survivors.